Log Message:
tex-revtex{,-doc}: update to 4.2c

REVTeX 4.2 is the latest update to REVTeX.  Changes include:

 * Added support for additional APS journals,  Physical Review X,
    Physical Review Accelerators and Beams, Physical Review Applied,
    Physical Review Fluids, Physical Review Materials, and Physical
    Review Education Research.
    There are new options prx,  prab, prapplied, prfluids, and
    prmaterials, and prper.

 * Added a unified physrev option for Physical Review journal style
   (the Phys. Rev. journals have no or few variations).

 * The prb option now conforms with Physical Review B's updated style
   that uses the same non-superscripted citations as other APS journals.

 * Added support for additional AIP journals, AIP Advances, Applied
   Physics Letters Materials, and Structural Dynamics as well as AIP
   Conference Proceedings. There are new options adv, apm, sd, and cp.

 * Added support for the  Society of Rheology (sor) and its journal,
   Journal of Rheology (jor).

 * The reprint style for AIP's journal JMP was changed to one-column
   formatting.

 * For all APS journal options, complete article titles are now
   displayed in bibliography entries citing journal articles when
   using Bib\TeX\ by default.

 * In the Phys. Rev. Bib\TeX\ style file, article titles in the
   bibliography are set in roman font.

 * The behavior of the noeprints option has been improved.

 * Support has been added for citing data sets in the Bib\TeX\ styles.

 * Support for citing journals that use a DOI instead of pages or article
   identifiers has been improved (for APS Phys. Rev. Bib\TeX\ style).

 * The indentation of tables of contents have been improved.

 * The onecolumn option no longer defaults to creating a separate title page.

 * The showpacs option is completely ignored now.

 This update (version 4.2c) includes updated bst files to address
 a serious bug. It also includes the additional files necessary to
 handle REVTeX 4.1 documents as a convenience to users and TeX
 distribution maintainers.