yacas 1.3.4

Closes #26562.

Signed-off-by: Adam Vandenberg <flangy@gmail.com>
glib: add option for static library creation

Closes #25505.

Signed-off-by: Adam Vandenberg <flangy@gmail.com>
pygobject3: Added Python 3 support
pygobject3: Moved build environment checks to Requirements
Added opt prefix to PYTHONPATH.
pygobject3: Merged multiple requirements into one.
pygobject3: Removed hacky string as boolean line
pygobject3: Experimental commit to see if it fixes tests