Add incremental release numbering for deb targets.
Tweak rpm release numbering as well.
Signed-off-by: Brenden Blanco <bblanco@plumgrid.com>

Fix ubuntu kernel path typo is INSTALL.md

Update rpm build scripts and README

Print traceback only if verbose mode was requested

trace: trace function execution with custom format strings and filters

Remove the unused Dockerfiles.

Create two flavors of spec files, one which includes steps to build
clang from source and link against it, and one which assumes clang is
already available and just builds bcc. The former is more appropriate
for official packaging, the latter for nightly and quick builds.

Also, introduce a numbering scheme for nightly rpm files. The format
will be:
`libbcc-$latest_git_tag-g$latest_git_hash.x86_64.rpm`
as in:
`libbcc-0.1.7-g73c4d1a.x86_64.rpm`

Update the INSTALL.md to mention the RPMs
Signed-off-by: Brenden Blanco <bblanco@plumgrid.com>

Documentation and tcp4connect enhancements

tcpconnlat

Migrated killsnoop to bpf_perf_event

syncsnoop migrated to use bpf_perf_events

Migrated filelife to bpf_perf_event

http_filter readme fixed

migration of statsnoop to use bpf_perf_event

Fix syntax error in bpf_get_prandom_u32

Fixes: #398
Signed-off-by: Brenden Blanco <bblanco@plumgrid.com>

Embed runtime header files in libbcc.so