Description:
------------
pecl-gnupg can't find gpgme because it's looking in the wrong place during ./configure .

* ./configure looks for /include/gpgme.h inside of /usr/local and /usr

-- but Gentoo puts gpgme.h inside of /usr/include/gpgme/.

Reproduce code:
---------------
Workaround:

apply following diff before phpize

--- gnupg-1.0/config.m4.old     2006-02-01 19:43:56.000000000 +0000
+++ gnupg-1.0/config.m4 2006-02-01 19:44:22.000000000 +0000
@@ -6,7 +6,7 @@
 
 if test "$PHP_GNUPG" != "no"; then
   SEARCH_PATH="/usr/local /usr" 
-  SEARCH_FOR="/include/gpgme.h"  
+  SEARCH_FOR="/include/gpgme/gpgme.h"  
   if test -r $PHP_GNUPG/$SEARCH_FOR; then
     GNUPG_DIR=$PHP_GNUPG
   else
@@ -24,7 +24,7 @@
     AC_MSG_ERROR([Please reinstall the gpgme distribution])
   fi
 
-  PHP_ADD_INCLUDE($GNUPG_DIR/include)
+  PHP_ADD_INCLUDE($GNUPG_DIR/include/gpgme)
 
   LIBNAME=gpgme
   LIBSYMBOL=gpgme_check_version