CommandTool: Fixed help message of command oat_analysisType

This patch fixes the help message printed by the command
oat_analysisType when given parameters are wrong.
Installer: Fixed installation process on Fedora and SLES

This patch fixes the installation of configuration file
OpenAttestationWebServices.properties, applying on Fedora
and SLES the same process already used on Ubuntu.
Installer: Directory for IRs created at installation time

This patch extends the installation process with the creation
of directory /var/log/oat_ir. This is the default directory for
saving integrity reports when the "IR on file" feature is active.
HisAppraiser: Moved function findHostOS() in new OSDao

This patch moves the function findHostOS() from the class
AttestService to a new DAO, called "OSDao". The function
queries the DB in order to obtain the OS corresponding to
a given hostName; this kind of functions should be placed
in a DAO.
HisClient: Level of valuesType defined from PCR num instead of eventType

This patch updates the generation of the element valuesType. The level
(LV0 or LV1) was defined using eventType, but this method does not
cover all of eventTypes used by IMA. The eventType is now replaced
with the PCR number: valuesType for PCR 10 is always LV1; all other
PCRs have level LV0.
HisClient: Fixed creation of Snapshot when PCR mask is not FFFFFF

This patch fixes the reading of PCR values when the PCR mask differs
from FFFFFF. Two issues have been solved:
 - The output of TPMModule does not include PCRs not present in
   the PCR mask, but the Client always expected all PCR values;
 - When scalability feature is active, the Client skips all bytes
   already read from the measurements file; the bytes counter must
   be incremented for every PCR, but it was incremented only for
   PCRs present in the PCR mask.
HisClient: Fixed scalability mechanism in case of Appraiser restart

When the Appraiser restarts some configuration property (e.g. PCR
mask) could be changed, then the Client can't continue last sent
IR and must send to the Appraiser the entire set of integrity
measurements. This patch updates the Client in order to be compliant
with this behaviour.