Consolidate all single-byte encodings in one source file

We can squeeze out a lot of duplicated code in this way.

Author: alexdowad

ext/mbstring/config.m4

@@ -94,16 +94,10 @@ AC_DEFUN([PHP_MBSTRING_SETUP_LIBMBFL], [
   PHP_MBSTRING_ADD_SOURCES([
     libmbfl/filters/html_entities.c
     libmbfl/filters/mbfilter_7bit.c
-    libmbfl/filters/mbfilter_ascii.c
     libmbfl/filters/mbfilter_base64.c
     libmbfl/filters/mbfilter_big5.c
-    libmbfl/filters/mbfilter_cp1251.c
-    libmbfl/filters/mbfilter_cp1252.c
-    libmbfl/filters/mbfilter_cp1254.c
     libmbfl/filters/mbfilter_cp5022x.c
     libmbfl/filters/mbfilter_cp51932.c
-    libmbfl/filters/mbfilter_cp850.c
-    libmbfl/filters/mbfilter_cp866.c
     libmbfl/filters/mbfilter_cp932.c
     libmbfl/filters/mbfilter_cp936.c
     libmbfl/filters/mbfilter_gb18030.c
@@ -119,24 +113,9 @@ AC_DEFUN([PHP_MBSTRING_SETUP_LIBMBFL], [
     libmbfl/filters/mbfilter_iso2022jp_2004.c
     libmbfl/filters/mbfilter_iso2022jp_mobile.c
     libmbfl/filters/mbfilter_iso2022_kr.c
-    libmbfl/filters/mbfilter_iso8859_1.c
-    libmbfl/filters/mbfilter_iso8859_10.c
-    libmbfl/filters/mbfilter_iso8859_13.c
-    libmbfl/filters/mbfilter_iso8859_14.c
-    libmbfl/filters/mbfilter_iso8859_15.c
-    libmbfl/filters/mbfilter_iso8859_16.c
-    libmbfl/filters/mbfilter_iso8859_2.c
-    libmbfl/filters/mbfilter_iso8859_3.c
-    libmbfl/filters/mbfilter_iso8859_4.c
-    libmbfl/filters/mbfilter_iso8859_5.c
-    libmbfl/filters/mbfilter_iso8859_6.c
-    libmbfl/filters/mbfilter_iso8859_7.c
-    libmbfl/filters/mbfilter_iso8859_8.c
-    libmbfl/filters/mbfilter_iso8859_9.c
     libmbfl/filters/mbfilter_jis.c
-    libmbfl/filters/mbfilter_koi8r.c
-    libmbfl/filters/mbfilter_armscii8.c
     libmbfl/filters/mbfilter_qprint.c
+    libmbfl/filters/mbfilter_singlebyte.c
     libmbfl/filters/mbfilter_sjis.c
     libmbfl/filters/mbfilter_sjis_open.c
     libmbfl/filters/mbfilter_sjis_mobile.c
@@ -153,7 +132,6 @@ AC_DEFUN([PHP_MBSTRING_SETUP_LIBMBFL], [
     libmbfl/filters/mbfilter_utf8.c
     libmbfl/filters/mbfilter_utf8_mobile.c
     libmbfl/filters/mbfilter_uuencode.c
-    libmbfl/filters/mbfilter_koi8u.c
     libmbfl/mbfl/mbfilter.c
     libmbfl/mbfl/mbfilter_8bit.c
     libmbfl/mbfl/mbfilter_pass.c

ext/mbstring/config.w32

@@ -17,25 +17,18 @@ if (PHP_MBSTRING != "no") {
 			"ext\\mbstring\\libmbfl\\config.h", true);
 
 		ADD_SOURCES("ext/mbstring/libmbfl/filters", "html_entities.c \
-			mbfilter_7bit.c mbfilter_ascii.c mbfilter_base64.c mbfilter_big5.c \
-			mbfilter_cp1251.c mbfilter_cp1252.c \
-			mbfilter_cp866.c mbfilter_cp932.c mbfilter_cp936.c mbfilter_cp51932.c \
-			mbfilter_euc_cn.c mbfilter_euc_jp.c mbfilter_euc_jp_win.c mbfilter_euc_kr.c \
+			mbfilter_7bit.c mbfilter_base64.c mbfilter_big5.c mbfilter_cp932.c \
+			mbfilter_cp936.c mbfilter_cp51932.c mbfilter_euc_cn.c \
+			mbfilter_euc_jp.c mbfilter_euc_jp_win.c mbfilter_euc_kr.c \
 			mbfilter_euc_tw.c mbfilter_htmlent.c mbfilter_hz.c mbfilter_iso2022_kr.c \
-			mbfilter_iso8859_1.c mbfilter_iso8859_10.c mbfilter_iso8859_13.c \
-			mbfilter_iso8859_14.c mbfilter_iso8859_15.c mbfilter_iso8859_16.c \
-			mbfilter_iso8859_2.c mbfilter_iso8859_3.c mbfilter_iso8859_4.c \
-			mbfilter_iso8859_5.c mbfilter_iso8859_6.c mbfilter_iso8859_7.c \
-			mbfilter_iso8859_8.c mbfilter_iso8859_9.c mbfilter_jis.c \
-			mbfilter_iso2022_jp_ms.c mbfilter_gb18030.c mbfilter_sjis_2004.c \
-			mbfilter_koi8r.c mbfilter_qprint.c mbfilter_sjis.c mbfilter_ucs2.c \
+			mbfilter_jis.c mbfilter_iso2022_jp_ms.c mbfilter_gb18030.c \
+			mbfilter_sjis_2004.c mbfilter_qprint.c mbfilter_sjis.c mbfilter_ucs2.c \
 			mbfilter_ucs4.c mbfilter_uhc.c mbfilter_utf16.c mbfilter_utf32.c \
-			mbfilter_utf7.c mbfilter_utf7imap.c mbfilter_utf8.c mbfilter_utf8_mobile.c \
-			mbfilter_koi8u.c mbfilter_cp1254.c mbfilter_euc_jp_2004.c \
-			mbfilter_uuencode.c mbfilter_armscii8.c mbfilter_cp850.c \
+			mbfilter_utf7.c mbfilter_utf7imap.c mbfilter_utf8.c \
+			mbfilter_utf8_mobile.c mbfilter_euc_jp_2004.c mbfilter_uuencode.c \
 			mbfilter_cp5022x.c mbfilter_sjis_open.c mbfilter_sjis_mobile.c \
-			mbfilter_sjis_mac.c \
-			mbfilter_iso2022jp_2004.c  mbfilter_iso2022jp_mobile.c \
+			mbfilter_sjis_mac.c mbfilter_iso2022jp_2004.c \
+			mbfilter_iso2022jp_mobile.c mbfilter_singlebyte.c \
 			mbfilter_tl_jisx0201_jisx0208.c", "mbstring");
 
 		ADD_SOURCES("ext/mbstring/libmbfl/mbfl", "mbfilter.c mbfilter_8bit.c \