use new print.integrateR() method; add "functional" checks

git-svn-id: svn://svn.r-forge.r-project.org/svnroot/rmpfr@189 edb9625f-4e0d-4859-8d74-9fd3b1da38cb
use if(..) .Call(f1, ..) else .Call(f2, ..) for "R CMD check"

git-svn-id: svn://svn.r-forge.r-project.org/svnroot/rmpfr@190 edb9625f-4e0d-4859-8d74-9fd3b1da38cb
less stringent check for Solaris SPARC; update

git-svn-id: svn://svn.r-forge.r-project.org/svnroot/rmpfr@191 edb9625f-4e0d-4859-8d74-9fd3b1da38cb
change rounding mode for asNumeric() to "N", such that 1e500 |--> Inf
 (instead of --horribilis-- 1.8e308 ;
-  `rnd.mode` as argument in more cases; 
-  more flexible, partly different behavior of integrateR()

git-svn-id: svn://svn.r-forge.r-project.org/svnroot/rmpfr@192 edb9625f-4e0d-4859-8d74-9fd3b1da38cb