guile-figl - Problems with master

[David Thompson]

Hello,

I checked out the latest commits in guile-figl's master branch and ran 
into a few issues:

1) Syntax error in the texinfo docs in `doc/low-level-gl.texi` on line 
19188.
Introduced in commit c7b3127.

2) Typo in `with-gl-push-matrix`. `%glPushmatrix` should be `%glPushMatrix`.
Introduced in commit a53c951.

3) The `pixel-format` enumeration is no longer correct. It only has one 
element, `red-ext`, when it should have `rgb`, `rgba`, and many others.
Introduced in commit c7b3127.

Issues 1 and 3 appear to be bugs in the code that generate bindings from 
the upstream documentation.

Thanks for reading.

- Dave