Commit autotools patch from Kevin Beswick

Commit autotools patch from Kevin Beswick
(adjusted slightly for Bill's objson API compatibility layer removal)

Enclosed is a patch to update the OpenSRF autotools implementation. It
fixes most bugs such as:
-correctly replacing hardcoded directory paths in various files
-correctly implementing clean, and uninstall make targets
-fixes building src/c-apps modules without the lib prefix
-builds the src/gateway apache modules with apxs
-fixed the naming of the opensrf-c binary

Also, it implements more of the autotools features:
-rolling a tarball with make dist
-enables VPATH (parallel) builds
-checking a distribution with make distcheck

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Signed-off-by: [Kevin Beswick (kevinbeswick00@gmail.com)]
git-svn-id: svn://svn.open-ils.org/OpenSRF/trunk@1375 9efc2488-bf62-4759-914b-345cdb29e865