btt: doc: PDF output with bookmark structure and clickable cross references

Need to extract labels from section titles as hyperref does not like this.

---
 btt/doc/Makefile |   2 +-
 btt/doc/btt.tex  | 142 +++++++++++++++++++++++++++++++++++++------------------
 2 files changed, 96 insertions(+), 48 deletions(-)

index 2e6fd88432c6..cf4fab61e87c 100644
@@ -1,4 +1,4 @@
-DOCTMP	= btt.log btt.aux btt.dvi btt.toc btt.tex.bak
+DOCTMP	= btt.log btt.aux btt.dvi btt.toc btt.tex.bak btt.out
 
 all: btt.pdf
 

2.14.2