glue.ligolw.param:  fix parse error when Param element is empty
glue.ligolw.ligolw:  tiny speed increase

before writing pcdata, check for non-None instead of boolean True
glue.ligolw:  test handing of empty Param elements in unit tests
FlatLatticeTiling: use UINT8 for template counting
FlatLatticeTiling: use tiled dimension indices where possible
FlatLatticeTiling: return tiled dimension index from XLALNextFlatLatticePoint()
FlatLatticeTiling: add function XLALFastForwardFlatLatticeTiling()

- fast-forwards over the highest tiled dimension
- use when counting templates
glue.dagfile:  update copyright notice
Update GSL configuration macros

- move LAL_CHECK_GSL_VERSION in lal.m4 to LALSUITE_CHECK_GSL_VERSION in lalsuite_build.m4
- use the same configure checks consistently for each LAL library that needs GSL
- refs #236
Require GSL version 1.13 or higher

- refs #236
PulsarCrossCorr_v2: fixed the maximum Doppler shift, fixed the calculation of statistic by the normalization factor S^{-1}*TSFT, modified the toplist output.
glue.ligolw.table:  new_from_template() --> .copy() method of Table