Sysroot is incorrectly prepended to inputs specified in INPUT / GROUP command

[parth-07]

Currently, we incorrectly prepend sysroot to inputs specified in INPUT / GROUP linker script commands.

Reproducible example:

#!/usr/bin/env bash

mkdir -p A/lib64
mkdir -p A/script

cat >1.c <<\EOF
int foo() { return 1; }
EOF

cat >script.t <<\EOF
GROUP(/lib64/lib1.so)
EOF

cat >main.c <<\EOF
int main() { return 0; }
EOF

clang -o lib1.so -target x86_64-unknown-elf 1.c -shared -fPIC
clang -o main.o -target x86_64-unknown-elf main.c -c 

mv lib1.so A/lib64/lib1.so

ld.eld --sysroot=A -T script.t main.o 
ld.lld --sysroot=A -T script.t main.o
ld.bfd --sysroot=A -T script.t main.o 

lld and bfd errors out whereas eld incorrectly finds the lib1.so file.

Another example:

#!/usr/bin/env bash

mkdir -p A/lib64
mkdir -p A/script

cat >1.c <<\EOF
int foo() { return 1; }
EOF

cat >script.t <<EOF
GROUP($(pwd)/A/lib64/lib1.so)
EOF

cat >main.c <<\EOF
int main() { return 0; }
EOF

clang -o lib1.so -target x86_64-unknown-elf 1.c -shared -fPIC
clang -o main.o -target x86_64-unknown-elf main.c -c 

mv lib1.so A/lib64/lib1.so

ld.eld --sysroot=A -T script.t main.o 
ld.lld --sysroot=A -T script.t main.o
ld.bfd --sysroot=A -T script.t main.o 

lld and bfd are correctly able to find lib1.so but eld canont find the lib1.so file.