gnu: boost: Update to 1.60.0.

gnu: boost: Update to 1.60.0.

* gnu/packages/boost.scm (boost): Update to 1.60.0.
  [source]: Remove patch.
* gnu/packages/patches/boost-mips-avoid-m32.patch: Delete patch
* gnu-system.am (dist_patch_DATA): Remove patch.

Also fix dependent packages:

* gnu/packages/patches/csound-header-ordering.patch: New patch.
* gnu/packages/audio.scm (csound)[source]: Use it.
  [arguments]: Add 'set-flags phase.
* gnu/packages/patches/libcmis-fix-test-onedrive.patch: New patch.
* gnu/packages/libreoffice.scm (libcmis)[source]: Use it.
  (libreoffice)[arguments]: Add LDFLAGS to #:configure-flags.
  (librevenge)[inputs]: Move boost from here...
  [propogated-inputs]: to here.
  [arguments]: Add LDFLAGS to #:configure-flags.
* gnu/packages/patches/openimageio-boost-1.60.patch: New patch.
* gnu/packages/graphics.scm (openimageio): Use it.
* gnu-system.am (dist_patch_DATA): Add patches.