Deprecate GtFeatureStream, replace with GtFeatureInStream

Simply doing a typedef of gt_feature_in_stream_new to gt_feature_stream_new was gave the desired functionality, but did not generate the desired (HTML) documentation. Thus the trivial constructor implementation.
Merge branch 'master' of https://github.com/genometools/genometools
Merge branch 'master' of https://github.com/genometools/genometools
Merge pull request #68 from standage/master

Deprecate GtFeatureStream, replace with GtFeatureInStream
use defined (_LP64) || defined (_WIN64) everywhere
Merge pull request #73 from gordon/windows

use defined (_LP64) || defined (_WIN64) everywhere
modify script
adjust for gt_pagesize splint error and reorder structs

structs were reorderd acording to size of elements
cosmetics, comments, fix header dependencies
ignore
remove impossible to reach if

for x > 0 there is no number which needs 0 bits.

Conflicts:
	src/extended/elias_gamma.h
remove unneeded declaration
fix header dependency
Merge pull request #74 from Garonenur/dw

gt_pagesize changed type, splint fails