added some assume tests in primdec.lib (quotient rings are not allowed and expected global monomial ordering)
proc Ann does accept nonglobal ordering
allow qrings and nonglobal order for Ann ,AnnExt_R
merged with spielwiese
 used Hans routine hasGlobalOrdering instead of my hasGlobalMonomialOrdering
Merge branch 'spielwiese' into add.assume.in.primdec.lib
fixed indentation
Merge branch 'spielwiese' into add.assume.in.primdec.lib
Merge remote-tracking branch 'origin/spielwiese' into add.assume.in.primdec.lib
Merge branch 'add.assume.in.primdec.lib' of https://github.com/surface-smoothers/Sources into add.assume.in.primdec.lib
no unconditional ASSUME in static routines
check if coefficient ring is field
fix: memory leak while calling gcd with a term and a non-term poly
new: division and gcd of integer polynomials via factory

added conversion functions between integer polynomials in Singular and Factory
extended the singclap_gcd and singclap_pdivide functions to cover the case where
ground ring is integer
removed unnecessary and unwanted ASSUME (shadows error msg)
Merge pull request #594 from surface-smoothers/add.assume.in.primdec.lib

added some precondition checks to 'primdec.lib'
Doxy creates no random directory

NOTE: doxy will clean the output directory now if it already exists
Added the reference about hub (http://hub.github.com)
Make doxygen dig into the new coeff.ring and related #ifdefs (SINGULAR_4_1)
fix some zerogens and size(ideal) issues in primdecint.lib
removed addIdealZ and fixed ASSUME level