configure: put m4 macros and autogenerated files into m4/ directory.
-rw-r--r-- 1340 .gitignore
-rw-r--r-- 270 AUTHORS
-rw-r--r-- 26530 COPYING.LIB
-rw-r--r-- 692 Makefile.am
-rw-r--r-- 5514 NEWS
-rw-r--r-- 2515 README
-rwxr-xr-x 1182 autogen.sh
-rw-r--r-- 17997 configure.ac
drwxr-xr-x - debian.upstream
drwxr-xr-x - docs
drwxr-xr-x - gst-libs
drwxr-xr-x - gst
drwxr-xr-x - pkgconfig
drwxr-xr-x - tests