pkg-config and add gitignore.

.gitignore

@@ -0,0 +1,59 @@
+*.o
+*.lo
+*.a
+*.la
+*.dirstamp
+*.pc
+*.log
+*.trs
+TAGS
+tags
+core*
+
+# autoconf output
+autom4te.cache
+*.in
+!/src/libemsha-1.pc.in
+config.*
+compile
+*.m4
+configure
+depcomp
+*.info
+mdate-sh
+stamp-*
+texinfo.tex
+version.texi
+install-sh
+missing
+Makefile
+.deps
+.libs
+libtool
+ltmain.sh
+
+RELEASE_NOTES
+debian/files
+debian/libemsha-1.postinst.debhelper
+debian/libemsha-1.postrm.debhelper
+debian/libemsha-1.substvars
+debian/libemsha-1/
+debian/libemsha-dev.substvars
+debian/libemsha-dev/
+debian/shlibs.local
+debian/source/
+debian/tmp/
+doc/source/header.dated.rst
+doc/source/header.rst
+src/cov-int/
+src/emsha_core_test
+src/emsha_hmac_test
+src/emsha_mem_test
+src/emsha_sha256_test
+src/emsha_static_hmac_test
+src/emsha_static_mem_test
+src/emsha_static_sha_test
+src/libemsha.tgz
+doc/source/conf.py
+/test-driver
+do-release