drain bamage this morning

[Alan Eldridge <alane geeksrus net>]

In that first message about parsing problems, the "if" clause of the 
problem statement really should have been:

if we change the defines at the top to:

%define is_release 1
%define is_preview 0
%define is_beta 1

then:

error: parse error in expression
error: /home/alane/rpm/SPECS/kdelibs.spec:59: parseExpressionBoolean 
returns -1
error: Group field must be present in package: (main package)
error: License field must be present in package: (main package)

where line 59 is the line with the %if %{is_beta}... if we rearrange the
tests, so that it looks like:

%if %{is_beta}
bla bla
%else
%if %{is_release}
bla bla

then the error occurs on the same line (which now has "%if %{is_release}").
That is, the nested %if following the %else, where the %else is the false
branch of the conditional, is flagged as an error.