Merge pull request #290 from jankoboehm/spielwiese

Added minimal failing test for hnoether
Fixed the usage pattern for StringEndS
Moved p_IsOne  to p_polys
Fixed the handling of constant (non-1) denoms
fix: nlPower with exp==0 return 1
fix: ntDiv: normlization of .../(-1)
chg: towards correct imap
fixed fetch/imap so far
still misses map from trans to alg extensions
Merge pull request #291 from mmklee/imap

Imap
fix: reading GF number: 6x in char 0 (New/hnoether_transcendentali.tst)
Cosmetic p_DegW/iv2array-related changes
Fixed p_DegW (minimal degree -1?!)
chg: extended naCopyTrans2AlgExt
fix: also map denominators
Update tests due to SW-specific changes
Merge pull request #292 from mmklee/imap

chg: extended naCopyTrans2AlgExt
Removing non-existing tests
fix: some warnings in libfac
cosmetics: p_DegW
Merge pull request #293 from mmklee/fix_sw_warnings

fix: some warnings in libfac