HttpHeader::Parse: accept "\n" line ending as well
HttpHeader::Parse: fix parsing multiline parameter (used only in tests)
HttpHeader::GetHeader: (used only in tests) return empty string if got nothing and use standard "\r\n" line ending
HttpHeader::AddParam: fix overwrite for non-lowercase names
HttpHeader::AddParam: trim name and value like "Parse()"
HttpHeader::AddParam: fix trying to add empty value or name
TestHttpHeader: rewrite HttpHeader tests
Merge pull request #4002 from Karlson2k/httpheader_add_01

Httpheader fixes and Httpheader tests update
fixed: use the proper make instead of calling 'make' directly

fixes builds on freebsd
cmake buildsystem
sq
add tests needed by new u16 string stuff
wrap cmyth properly
move some more install related stuff to install script
move all install code to platform install script
allow building without doxygen
fix building with yajl2
generate scripts in a subdir to avoid problems configuring in top dir
properly wrap library.xbmc.foo
link to threading lib