Adding .gitignore

Summary:
This is my local exclude file. It hides all the garbage that phpize puts into your directory in addition to bison, flex, and re2c generated files.

.gitignore

@@ -0,0 +1,35 @@
+*.[oa]
+*.[ls]o
+*.la
+*.swp
+xhp/parser.yacc.*
+xhp/scanner.lex.*
+xhp/fastpath.cpp
+xhp/libxhp.so
+xhp/xhpize
+/.deps
+/.libs
+/Makefile
+/Makefile.fragments
+/Makefile.global
+/Makefile.objects
+/acinclude.m4
+/aclocal.m4
+/autom4te.cache
+/build
+/config.guess
+/config.h
+/config.h.in
+/config.log
+/config.nice
+/config.status
+/config.sub
+/configure
+/configure.in
+/install-sh
+/libtool
+/ltmain.sh
+/missing
+/mkinstalldirs
+/modules
+/run-tests.php