highlight: Generate pygments style sheet dynamically
This patch allows a per-repository (for example, within a hgwebdir) selection
of pygments_style web option. No static .css files required.
Test edited by pmezard (compatibility fixes)
abort: Failed to parse .../t/.hg/hgrc
File contains no section headers.
file: .../t/.hg/hgrc, line: 1
'invalid\n'