libcap: Update to version 2.76

libcap: Update to version 2.76

- Update from version 2.75 to 2.76
- Update of rootfile
- Changelog
    2.76
	    More libpsx and psx Go package mechanism fixes (many thanks to Christial
	     Kastner for helping dive into the off-piste architectures. See Bug 219915.)
	        Address an arm64 (aarch64) libpsx issue seen with Tracee.
		 (Tagged psx/v1.2.76-rc1)
	            Note, 2.75 should have fixed the tracee issue 4678 but the above
		     issue emerged from their extensive testing. Thanks to Gregório G.
		     for reporting the observed failure details.
	        More architectures supported: of the many architectures Debian builds
		 for, we think only alpha and sparc64 have problems. Unable to
		 construct qemu-*-system images  with which to debug these. If anyone
		 has a recipe for that that works for Fedora as a base platform,
		 please provide details...
	    To make the various .so files continue to be runnable as standalone
	     programs added another workaround for glibc. (Bug 219880 reported by
	     Christian Kastner.)
	        _IO_stdin_used needs to be weekly defined to make puts() and friends
		 work. Also updated the Stackoverflow answer to include that detail.
	    Made a new man page cap_text_formats(7). This makes it possible to
	     separate the tool man pages from the developer man pages. I believe this
	     was the second time this was requested, by Carlos Rodriguez-Fernandez
	     this time (can't find the former request in my email).
	        Some man page cross linking fixes as well.
	    Dropped Make.Rules definition of SYSTEM_HEADERS Thanks to Ross Burton for
	     reporting.
	    Removed a spurious debugging printf() from setcap tool.
	    Removed cap_ workarounds for go.dev cap package examples. The website bugs
	     have been resolved: go/issues/70611;  go/issues/70630.
	    Added a Makefile to the contrib/seccomp example.

Signed-off-by: Adolf Belka <adolf.belka@ipfire.org>
Signed-off-by: Michael Tremer <michael.tremer@ipfire.org>