Enable EXIF by default as discussed with Rasmus

@made EXIF (digital camera) extension enabled by default. (Marcus)

Author: helly25

ext/exif/config.m4

@@ -2,10 +2,10 @@ dnl
 dnl $Id$
 dnl
 
-PHP_ARG_ENABLE(exif, whether to enable EXIF support,
-[  --enable-exif           Enable EXIF support])
+PHP_ARG_ENABLE(exif, whether to enable EXIF (digital camera) support,
+[  --disable-exif          Disable EXIF (digital camera) support], yes)
 
 if test "$PHP_EXIF" != "no"; then
-  AC_DEFINE(HAVE_EXIF, 1, [Whether you want exif support])
+  AC_DEFINE(HAVE_EXIF, 1, [Whether you want EXIF (digital camera) support])
   PHP_NEW_EXTENSION(exif, exif.c, $ext_shared)
 fi