portable: add object_qid.c where required Part of a wider change.

portable: linux: add libmd On some systems libmd isn't explicitly implied, so detect this via pkg-config at configure time. Problem reported by @stsp

portable: configure: split out dependencies Rather than assume all dependencies are required for all programs, split them out. This will make packaging easier, as well as splitting the code to use subprojects. Note that due to the use of config.h semantics, in most cases the got_compat.h header file is now at the top of the .c file it is included in, so that it can handle the system header inclusion properly.

portable: update Makefiles sha1.c -> hash.c

portable: cross-compile pages.c When building the template files on the host (which is cross-compiled), do so just by handling pages.c appropriately. Based on a patch by op@, and modified by me.

portable: move tmpl.h to EXTRA_DIST This header isn't needed for direct compilation, but should be included as part of the main tarball.

portable: gotwebd: add tmpl.h to gotwebd_SOURCES unbreaks `make dist'

portable: gotwebd: use template This updates -portable's gotwebd instance to make use of the new templating engine.

portable: support infrastructure for gotd/gotsh Provide the ability for -portable to continue to compile, until such time that gotd and gotsh have been enabled in -portable.

portable: sort makefile source lines For all key Makefile.am files in use, sort the files so that they're more easily identifiable -- especially when adding/removing source files.

move got_gotconfig_read() into new file read_gotconfig_privsep.c

move code for reading Git's config file into new file read_gitconfig_privsep.c The end goal here is to remove the dependency of repository.c on privsep.c during compilation.

move functions which open objects into new file object_open_privsep.c For the future, this will make it possible to provide alternative implementations of functions now stored in object_open_privsep.c. This will probably be needed by future gotd(8) which runs inside a chroot(2) environment and without the "exec" pledge(2) promise, making it impossible to run libexec helpers on the fly. Details of this design are not yet settled, but moving functions into a separate compilation unit won't hurt in any case.

portable: gotwebd: install to sbin When installing gotwebd, put this under ${prefix}/sbin

portable: provide sockaddr-linux implementation Someof the socket code has been factored out of gotwebd and put centrally so that platform-specific targets can be created, without the need of heavily modifying the central socket code to contain numerous ifdefs.

portable: gotwebd: add headers to EXTRA_DIST Add the header files under gotwebd to EXTRA_DIST so that they're included in the distribution tarball.

portable: gotwebd: first stab at compilation This is not yet "clean", but does compile. A few things to consider: * See comments beginning with "TA:"