add: checks for rational coeff. in rational functions
add: n_InpAdd

from master
new Singular logo

* new folder "logo" containing Singular logo templates in svg format

* updated Singular debian icon
Singular logo with black border
changed default Singular logo
new Singular logos

* Singular text

* Singular text and logo
Merge pull request #321 from mschulze/spielwiese

new Singular logo
removed CPPFLAGS from debian/rules
Debian package divided into multiple packages

* new packages are singular-bin, singular-common, and singular-dev

* the meta package singular depends on singular-bin and singular-common
 Debian package divided into multiple packages

* new packages are singular-bin, singular-common, and singular-dev

* the meta package singular depends on singular-bin and singular-common
fixed typo
fix: n_Normalize for rat. functions
Merge pull request #322 from mschulze/spielwiese

Spielwiese - debian package stuff
fixed problem in Makefile.am caused by Debian changes
Merge pull request #323 from mschulze/spielwiese

fixed problem in Makefile.am caused by Debian changes
fix: libparse (re-adding iiInitSingularProcinfo to utils.cc)
fix: removed debug output
fix: removed more debug output
fix: removed more debug output
fix: ntGreater (bug_tr329)