Miscellaneous cleanup patches

added 1 commit

• c824d5d6 - Remove the boundary_segment::segType data member

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added 1 commit

• 194528d7 - Remove the bndcond struct

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added 1 commit

• 85dadd70 - Remove the struct MatrixDescriptor

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added 4 commits

• 2a60c831 - Remove documentation for the old memory management implementation
• 12f859fe - Remove more obsolete doc files
• 1a5212a2 - Remove the 'problem' data structure
• 1b48d82c - Merge the information from gm.doc into the code

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added 8 commits

• d7ef8b33 - Remove the 'problem' data structure
• 84368551 - Merge the information from gm.doc into the code
• 22ccd761 - Remove unused static method
• d03cdf3d - Avoid signed/unsigned warning
• f475b6d8 - Remove unused types COORD and SCREEN_COORD
• 6187eda7 - Remove support for edge vectors
• 68f0f325 - Remove unused variable
• e04e7221 - Fix some warnings, and remove some unused code

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added 2 commits

• dd368c1a - Remove unused variable
• 0e9f142e - Fix some warnings, and remove some unused code

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mentioned in commit 328db858

merged