Fix also works for -h and -?

Import, export and testcase.

On Linux, public templates should not be hidden at the linker level.
But on Windows, dllimport causes trouble. So create a new macro
to be used specifically with templates that does the right thing
on both platforms.
(http://lists.freedesktop.org/archives/libreoffice/2012-March/028041.html
and followups)

... so drop the dependency on dev-install (with it, subsequentcheck is
just a synonym for check, which does not seem useful).

but that is fine, because outside the unittest it should fail
everywhere

and this also avoids reaching the parse recursion limit with clang,
because all the macros C2U expands to, although clang's limit is
probably tad a bit low

To help distinguish between OOo derivatives.

match() has matchIgnoreAsciiCase(), so it makes sense that endsWith()
also has the IgnoreAsciiCase variant, especially given there already is
endsWithIgnoreAsciiCaseAsciiL()

the comment was wrong, char gets converted to const char, not the
other way around