Small fix in libmill.pc
Small fix in libmill.pc

Signed-off-by: Martin Sustrik <4dd6061be1198639e8b05ce4fd5ead7a0dcaa0f4@250bpm.com>

dailypips/libmill,linearregression/libmill,jimjag/mill,reqshark/libmill,jimjag/mill,sustrik/libmill,dailypips/libmill,lsm/libmill,dailypips/libmill,lsm/libmill,ebfe/libmill,lsm/libmill,sustrik/libmill,sustrik/libmill,ebfe/libmill,jimjag/mill,reqshark/libmill,linearregression/libmill,ebfe/libmill,reqshark/libmill,linearregression/libmill