[Docs] Make Doxygen functional

This fixes the doxygen configuration to be functional again. I removed
the customer header and footer, as well as the no-longer-existent style
sheet. I also widened the scope of the documentation, from just the
public API to include the private interfaces as well.

llvm-svn: 358773
diff --git a/lldb/docs/doxygen.cfg.in b/lldb/docs/doxygen.cfg.in
index 0c20660..c882b36 100644
--- a/lldb/docs/doxygen.cfg.in
+++ b/lldb/docs/doxygen.cfg.in
@@ -25,7 +25,7 @@
 # The PROJECT_NAME tag is a single word (or a sequence of words surrounded
 # by quotes) that should identify the project.
 
-PROJECT_NAME           = LLVM
+PROJECT_NAME           = LLDB
 
 # The PROJECT_NUMBER tag can be used to enter a project or revision number.
 # This could be handy for archiving the generated documentation or
@@ -581,8 +581,9 @@
 # directories like "/usr/src/myproject". Separate the files or directories
 # with spaces.
 
-INPUT                  = @abs_top_srcdir@/include/lldb/API \
-                         @abs_top_srcdir@/docs/doxygen.intro
+INPUT                  = @abs_top_srcdir@/include/ \
+                         @abs_top_srcdir@/source/ \
+                         @abs_top_srcdir@/docs/doxygen-mainpage.dox
 
 # This tag can be used to specify the character encoding of the source files
 # that doxygen parses. Internally doxygen uses the UTF-8 encoding, which is
@@ -793,13 +794,13 @@
 # each generated HTML page. If it is left blank doxygen will generate a
 # standard header.
 
-HTML_HEADER            = @abs_top_srcdir@/docs/doxygen.header
+HTML_HEADER            =
 
 # The HTML_FOOTER tag can be used to specify a personal HTML footer for
 # each generated HTML page. If it is left blank doxygen will generate a
 # standard footer.
 
-HTML_FOOTER            = @abs_top_srcdir@/docs/doxygen.footer
+HTML_FOOTER            =
 
 # The HTML_STYLESHEET tag can be used to specify a user-defined cascading
 # style sheet that is used by each HTML page. It can be used to
@@ -808,7 +809,7 @@
 # the style sheet file to the HTML output directory, so don't put your own
 # stylesheet in the HTML output directory as well, or it will be erased!
 
-HTML_STYLESHEET        = @abs_top_srcdir@/../../docs/doxygen.css
+HTML_STYLESHEET        =
 
 # The HTML_COLORSTYLE_HUE tag controls the color of the HTML output.
 # Doxygen will adjust the colors in the stylesheet and background images