Build json library as static one

If STATIC keyword is not specified this library is build either
shared or static depending on distributive settings which differ
for RHEL/Fedora and Ubuntu/Debian
Removed out-of-dated Fedora patch

Looking for Boost library was already fixed in 8f7e6c96, so this
patch can be removed
Merge pull request #99 from euroelessar/v0.11

Fixed build on rpm-based platforms
Bump version - 0.11.2.3.
Merge pull request #102 from andrusha97/v0.11

Bump version - 0.11.2.3.
spec: updated spec to the latest version to date
Merge pull request #103 from bioothod/v0.11

spec: updated spec to the latest version to date
spec: updated spec version
Merge pull request #104 from bioothod/v0.11

spec: updated spec version
Merge remote-tracking branch 'upstream/v0.11' into v0.11