catchup the gingerbread branch to gingerbread-docs for all sdk docs

This is just a manual copy of all files that changed, rather than a dozen cherry picks.

Change-Id: I672f74a2ec9242a1d96713d1d84bfc4d2d47dd85
diff --git a/docs/html/sdk/requirements.jd b/docs/html/sdk/requirements.jd
index 401dfe3..3d62dd9 100644
--- a/docs/html/sdk/requirements.jd
+++ b/docs/html/sdk/requirements.jd
@@ -10,8 +10,8 @@
   <li>Mac OS X 10.5.8 or later (x86 only)</li>
   <li>Linux (tested on Ubuntu Linux, Lucid Lynx)
     <ul>
-      <li>GNU C Library (glibc) 2.11 or later is required.</li>
-      <li>On Ubuntu Linux, Lucid Lynx or later release is required.</li>
+      <li>GNU C Library (glibc) 2.7 or later is required.</li>
+      <li>On Ubuntu Linux, version 8.04 or later is required.</li>
       <li>64-bit distributions must be capable of running 32-bit applications. 
       For information about how to add support for 32-bit applications, see
       the <a href="installing.html#troubleshooting">Ubuntu Linux