Fixed bug in start-of-text guide element generation when book does not have titlepage or cover.
Merge pull request #147 from oreillymedia/opf-guide

Fixed guide-generation bug
Whitespace-stripping handling for indexterms.
Merge pull request #148 from oreillymedia/indexterm-whitespace

Whitespace-stripping handling for indexterms
Merge branch 'master' of https://github.com/oreillymedia/HTMLBook

Conflicts:
	htmlbook-xsl/common.xsl
	htmlbook-xsl/xspec/common.xspec