libxslt: Update to version 1.1.37

libxslt: Update to version 1.1.37

- Update from version 1.1.35 to 1.1.37
- Update of rootfile
- Changelog
    v1.1.37: Aug 29 2022
	### Improvements
		- Don't use deprecated libxml2 macros
		- Don't mess with xmlDefaultSAXHandler
	### Build system
		- Require automake-1.16.3 or later
		- Remove generated files from distribution
		- Add missing compile definition for static builds to Autotools (Mike Dalessio)
    v1.1.36: Aug 17 2022
	### Removals and deprecations
		- Remove SVN keyword anchors
		- Remove CVS and SVN-related code
		- Remove README.cvs-commits
		- Remove ChangeLog
		- Remove xsltwin32config.h
	### Improvements
		- Simplify xsltexports.h and exsltexports.h
		- Don't overlink executables with gcrypt
		- Fix quadratic behavior with variables and parameters
		- Remove case labels with XPointer location types
		- Add configure~ to .gitignore
		- Stop calling deprecated libxml2 functions
	### Portability
		- Use portable python shebangs (David Seifert)
		- Remove useless __CYGWIN__ checks
		- Remove cruft from win32config.h
		- crypto.c: Silence a compiler warning on Windows (Chun-wei Fan)
	### Build system
		- Add missing compile definition for static builds to CMake
		- Avoid obsolescent `test -a` constructs (David Seifert)
		- Only link libxml2 statically in purely static build
		- Set AC_CONFIG_MACRO_DIR
		- Allow AM_MAINTAINER_MODE to be disabled
		- Streamline and fix documentation installation
		- Don't try to recreate COPYING symlink
		- Remove special configuration for certain maintainers
		- configure.ac: produce tar.xz only (GNOME policy) (David Seifert)
		- Detect libm using libtool's macros (David Seifert)
		- configure.ac: disable static libraries by default (David Seifert)
		- python/Makefile.am: nest python docs in $(docdir) (David Seifert)
		- python/Makefile.am: rely on global AM_INIT_AUTOMAKE (David Seifert)
		- configure.ac: remove useless AC_SUBST (David Seifert)
		- Use AM_PATH_PYTHON/PKG_CHECK_MODULES for python bindings (David Seifert)
		- Change libxml2 Python config
		- Don't check for standard C89 library functions
		- Don't check for standard C89 headers
		- Remove --with-html-dir option
		- Also check for glibtoolize in autogen.sh
		- Rework documentation build system
		- Remove old website
		- CMake: Relax check for enabling crypto support on Windows (Chun-wei Fan)
		- Remove obsolete AC_HEADER_STDC autoconf macro (Vadim Zeitlin)
		- Remove special configuration for old maintainers
	### Test suite, CI
		- Remove test involving XPointer range-to function
		- Test recursion in EXSLT dynamic functions
		- Add CI job for static build
	### Documentation
		- Move tutorial images

Signed-off-by: Adolf Belka <adolf.belka@ipfire.org>
Reviewed-by: Peter Müller <peter.mueller@ipfire.org>