OpenSystemsDevelopment / qpdf

Also remove linearization from qpdf-manual.pdf. It's a small file, and
removing the dependency on the qpdf executable significantly shortens
build times.

Add a new make target that installs the qpdf libraries without
executables or documentation.

This solves
  libtool: compile: unable to infer tagged configuration
  libtool:   error: specify a tag with '--tag'
build issues when using toolchain that prevents libtools
inference rules from working correctly (e.g. ccache).

This is suitable for use as a Lambda layer in AWS, inclusion in a
docker container, or other places where a minimal binary distribution
is desired.

Use autoconf rather than ifdefs to determine what format string to use
for long long.

For wildcard expansion to work properly with the msvc binary, it is
necessary to link with setargv.obj or wsetargv.obj, depending on
whether wmain is in use.

Specify qpdf libraries before external ones.
Specify LDFLAGS before libraries.
This should eliminate remaining cases of qpdf builds favoring
previously installed versions.

Resolve link error on cygwin

Slightly improve memory cleanup in Pl_DCT
Make it easier to test with valgrind

Don't try to install HTML or PDF documentation if we're not building
docs.

Also separate C and C++ warning flags.

Some distributions (like debian) don't want .la files to be installed,
but the responsibility for doing this should like in the packaging,
not in qpdf itself.

Place user-specified CPPFLAGS and LDFLAGS later so that user-specified
non-standard paths that have old versions of qpdf don't cause the
build to fail.

For ELF systems, turn on versioned symbols by default, and add a
configure option to enable or disable them.

git-svn-id: svn+q:///qpdf/trunk@1058 71b93d88-0707-0410-a8cf-f5a4172ac649

git-svn-id: svn+q:///qpdf/trunk@854 71b93d88-0707-0410-a8cf-f5a4172ac649

git-svn-id: svn+q:///qpdf/trunk@776 71b93d88-0707-0410-a8cf-f5a4172ac649

git-svn-id: svn+q:///qpdf/trunk@763 71b93d88-0707-0410-a8cf-f5a4172ac649

git-svn-id: svn+q:///qpdf/trunk@760 71b93d88-0707-0410-a8cf-f5a4172ac649

git-svn-id: svn+q:///qpdf/trunk@759 71b93d88-0707-0410-a8cf-f5a4172ac649

git-svn-id: svn+q:///qpdf/trunk@753 71b93d88-0707-0410-a8cf-f5a4172ac649