Separating Sources kernel/linear_algebra
Separating Headers: kernel/linear_algebra
removed: unused references to gmp_output_digits
comments by Claus Fieker (CF)
removed char_flag from coeffs
fix: definition of nlInit2gmp
fix: tr.590
fix: tr.588  reconsidered (syz,intersect,modulo and returnSB)
tests for dumb things: tr.590,588,579,576
Merge pull request #551 from adipopescu/LinearAlg

Separation of LinearAlgebra-related code inside Kernel
Separating Sources kernel/maps
Separating Headers kernel/maps
Separating Sources kernel/GBEngine
Separating Headers kernel/GBEngine
fix: assign string->proc also from variables (tr.591)
Revert "Added kernel dummy package: sample" (no need anymore)

NOTE: kernel/sample/Makefile.am is left as an example but not used anymore

This reverts commit 3074ad70db777694b401b1cd3980f74301b0339d.
Moved old (obsolete) code into '/kernel/old/'

+ cleanup
Moved htmlhelp.* to Singular/ from kernel/ (may be used in some future)
Cleanup scons leftovers
Moved /kernel/{Cache*.h,interpolation.{h,cc},minpoly.{h,cc}} (orig. from /Singular/) to kernel/linear_algebra/