graphics/libwpg03: update to 0.3.4 release (+)

CHANGES:

• WPG2: Incomplete implementation of handlePenForeColor (bdo#155057) + leftovers of refactoring
• Correct a problem concerning HAVE_VISIBILITY not defined when compiling for Windows...
• WPG1: fix vertical position of text line
• WPG1: improve output of aligned text
• WPG1: handle font size
• WPG1: parse more graphic text attrs
• WPG1: make text type 2 handler build again
• Add note for text position
• WPG1: handle text color
• WPG1: parse some bits of text attrs record
• Drop pointless cast
• WPG1: handle line style
• Drop a pointless cast
• WPG1: parse page format record
• WPG1: handle groups
• Fix too small loop variables