Use php.c and lregex.c from CTags SVN (closes #1795810).
Add regex.c and regex.h (GNU regex) for regex support on Windows.	 


git-svn-id: https://geany.svn.sourceforge.net/svnroot/geany/trunk@2053 ea778897-0a13-0410-b9d1-a72fbfd435f5