Added new functions to the registry for reading / writing byte arrays
of binary content and escaping registry keys that contain binary
content. Modified code which reads/writes location of dll or javascript
for components to use new ReadBytesUTF8/WriteBytesUTF8 and which uses
or reads the keys to use EscapeKey and UnescapeKey.
r=dveditz
Bug 12817 no Autoreg (in optimized builds) unless xpinstall detects flag indicating install has happened or build number changed, r=dp, a=jar;
Bug 23859 add wstring API to nsIRegistry for profile manager/i18n, r=gayatrib, a=jar;
new version registry name for mozilla, bug 10533;
log now created by install wizards too, bug 26309;
downloaded file cleanup moved into manager, bug 24249;
scaffolding for bug 12817 and 12361 (conditional autoreg)
