Added new SM_SKIPCHECKSUM variable in bldpkg and sample buildfile

Removed more redundant code from base/pkgtools build file

base/pkgtools/pkgtools.SMBuild

@@ -35,5 +35,3 @@ build() {
   mkfinalpkg
 }
 
-SHA512SUMS="
-"

bldpkg

@@ -232,6 +232,9 @@ fi
 trap "prepbuildsummary" EXIT
 trap "interruptsummary" INT
 
-verifychecksums
+# Only verify source checksums if SM_SKIPCHECKSUM is not set in the build file
+if [ -z "$SM_SKIPCHECKSUM" ] ; then
+  verifychecksums
+fi
 build
 

buildsamples/sample.SMBuild.explained

@@ -59,6 +59,10 @@ SM_NOAUTOCONFSITE=1
 # which it normally wouldn't when the cache file was not used.
 # This variable is optional.
 
+SM_SKIPCHECKSUM=1
+# ^ This variable, when set to 1, will cause the build system to skip checksum verifications. Use it when building 
+# packages that contain files without any extensions, like scripts or any binaries
+
 HOMEPAGE=""
 # ^ Add Homepage URL or website of the author of package to this