sysutils/clone: Update to 1.0.8

ChangeLog: https://github.com/cyclaero/clone/releases/tag/v1.0.8

• fixed a bug which spoiled the permissions when cloning from read only file systems
• added facility for oversize protection for variable length arrays and alloca()
• more adequate choice of compiler options
• corrected man file

PR: 245777
Submitted by: cyclaero@gmail.com (maintainer)
MFH: 2020Q2 (blanket: bugfix release)