build: put build files into m4/ instead of common/m4/

We don't want the common submodule directory contaminated with
random build cruft.

.gitignore

@@ -46,3 +46,5 @@ gst-python*.tar.*
 pygst.py
 gst-libs
 log
+
+m4/*

Makefile.am

@@ -7,7 +7,7 @@ common_ldflags = -module -avoid-version
 # include before EXTRA_DIST for win32 assignment
 include $(top_srcdir)/common/win32.mak
 
-ACLOCAL_AMFLAGS = -I common/m4
+ACLOCAL_AMFLAGS = -I m4 -I common/m4
 
 pyexec_LTLIBRARIES = 
 
@@ -63,3 +63,16 @@ check-torture:
 	@true
 
 include $(top_srcdir)/common/coverage/lcov.mak
+
+CRUFT_FILES = \
+	$(top_builddir)/common/shave \
+	$(top_builddir)/common/shave-libtool \
+	$(top_builddir)/common/m4/libtool.m4 \
+	$(top_builddir)/common/m4/ltoptions.m4 \
+	$(top_builddir)/common/m4/ltsugar.m4 \
+	$(top_builddir)/common/m4/ltversion.m4 \
+	$(top_builddir)/common/m4/lt~obsolete.m4
+
+include $(top_srcdir)/common/cruft.mak
+
+all-local: check-cruft

autogen.sh

@@ -68,7 +68,7 @@ fi
 toplevel_check $srcfile
 
 tool_run "$libtoolize" "--copy --force"
-tool_run "$aclocal" "-I common/m4 $ACLOCAL_FLAGS"
+tool_run "$aclocal" "-I m4 -I common/m4 $ACLOCAL_FLAGS"
 tool_run "$autoheader"
 
 # touch the stamp-h.in build stamp so we don't re-run autoheader in maintainer mode -- wingo

configure.ac

@@ -42,7 +42,7 @@ AC_SUBST(PACKAGE_VERSION_MICRO)
 AC_SUBST(PACKAGE_VERSION_NANO)
 
 dnl Add parameters for aclocal
-AC_SUBST(ACLOCAL_AMFLAGS, "-I common/m4")
+AC_SUBST(ACLOCAL_AMFLAGS, "-I m4 -I common/m4")
 
 dnl required versions of other packages
 AC_SUBST(PYGTK_REQ, 2.6.3)